Mine-car wheel.



J. COAN.

, MINE CAR WHEEL.

APPLICATION FILED AUG.I7, 191s.

mm'm. Patented Dec.14,1915.

FIE I WI T/VESSES:

lllll/E/VTOR ATTORNEYS COLUMBIA PLANOORAPH c0.. WASHINGTON. D. C,

ill

JOHNCOAN, 0F BALDWIN, COLORADO.

MINE-CAR "WHEEL.

Specification of Letters Patent. Patqgntefl D w 141 1915 Applicationfiled August 17, 1315. Serial No. 45,953.

mine car wheels having a fixed axle for lock-' ing the wheels with theaxle at will to prevent accidental movement of the car along a track.

Another object of the invention contemplates the provision. of a bushingupon which the wheel may be journaled and which may readily be securedto the squared axle ends, thus doing away with the common and expensivepractice of turning the axleends for the accommodation of the wheelhubs.

A further object of the invention is to provide a wheel of the classdescribed haw ing a highly efficient method of lubrication.

Still. another object of the invention is to provide a wheel of theclass described which will be extremely simple, durable, eliicient jinoperation and inexpensive to manufac- 'ture.

"With these and other objects in view which-wlll become apparent as thedescription proceeds, the invention resides in the construction,combination and arrangement of parts, hereinafter more fully describedand claimed, and illustrated in the accompanying drawing, in which likecharacters of reference indicate like parts throughout i the severalfigures, of which- Figure 1 represents a view in longitudinal sectionthrough a wheel constructed according to my invention. Fig. 2 representsa detail view in transverse section taken on I the plane indicated bythe line 22 of Fig.

by the line 1 looking in the direction indicated by the arrow. Fig. 3represents a view in transverse section taken on the plane indicatedvide a bearing for the wheel, without necessitating the turning out ofthe axle ends,

I utilize a sleeve 6 having a closed end 7, said sleeve beingcylindrical on its outer surface and having a squared bore into whichthe axle is adapted to extend as indicated. By means of a rivet or othersuit able-fastening device 8 the sleeve is maintaineol upon the axle.

The wheel hub is indicated at 9, and is provided with an annular recessforming an oil chamber at 10. Access may be had to the chamber from theoutside of the wheel by means of the openings 11, which are normallyclosed by the conical plugs 12 threaded in said openings. The numberofthe plugs may be varied to suit the require ments in each case.Surrounding sleeve-6 between said sleeve and hub 9, is a brass bushing13 in the form of a cylinder. At its outer end the bushing extends intoashallow recess at it provided in the hub cap 15. This cap ispreferablyformed inte grally with the hub of the wheel. The'bushing 13.acts as a bearingupon "which" the wheel may rotate. At the inner end ofthe hub is provided a cap 16 having a peripheral inwardly extendingflange 17 threaded as at 18 upon the hub, and also provided with aninner annular flange 19 bearing against the adjacent end of bushing "13.The cap 16 is provided with a central opening 20 large enough toaccommodate axle 5, so that the cap may turn'with the hub about saidaxle without coming in contact'wit'h the latter. The end 7 of sleeve 6is provided centrally with a recess 21 whose walls 22 converge from bothends toward their center, the central points of the opposite walls beinghowever spaced apart. For engagement with this recess in order to lockthe wheel hub with the sleeve and consequentlylvvith the axle whendesired, I provide a dog or detent 23 normally housed within a recess at24t provided axially in the hub cap The dog is preferably rectangular incross section, and is adapted when shifted out of the recess 24. toengage within the recess21. The length of dog 24: is greater. than thewidth of recess 21. A. stem 25 journaled in the dog, extends out throughthe adjacent wall of the hub cap and isprovided'with a knob 26 by meansof which said stem may be turned. A pair of arcuate lugs 27 spaced apartat their ends, are provided on the hub cap concentrically with stem 25.Openings 28 occur between the adjacent ends of lugs 27 and theseopenings are disposed at diametrically opposed points relative to thestem. A cross pin 29 is carried by stem 25, and is adapted when the stemand dog are in the position indicated in Fig. l to rest upon the outerends of lugs 27 for maintaining the dog within its recess 24 in themanner indicated. The dog is provided adjacent the outer wall of the hubcap with a recess in which a coiled spring 30 is disposed. This springat one end bears against the hub cap and at its opposite end against thefloor of the recess in which it is positioned and has a normal tendencyof throwing the dog outwardly into engagement with the recess 21.

Ordinarily the hub and wheel rotate relatively to the axle, but when itis desired to lock the wheel and axle so as to prevent movement of thecar the knob 26 is turned such a distance as to bring cross pin 29 intoregistration with the openings 28, and upon release of the knob 26 thispin will drop into the openings through the action of spring 30, at thesame time the dog 23 is forced outwardly and into the recess 21. The hubis thus locked with the axle, and cannot be rotated relatively theretountil the stem is withdrawn and the pin again turned into such positionas to rest against the outer edges of lugs 27.

A guard 31 in the form of an annular flange provided on hub cap 15,surrounds the lugs 27 and the outer end of stem 25 including the knob soas to effectually protect the same and prevent breakage of the partsupon engagement with lumps of coal or other debris lying alongside thetrackway. The bushing 13 at points within the oil chamber 10 is providedwith a sufficient number of openings 32. The oil chamber is adapted tobe filled through the openings 11 with suitable cottonwaste or othermaterial, which may then be soaked with the desired lubricant and theplugs replaced. The oil may pass through the openings 32 whereby thebearing surface between the bushing and sleeve may be lubricated in avery eflicient manner. Such a wheel as I have provided may bemanufactured at comparatively low .-cost, and the parts may readily andrapidly be assembled on the axle without the use of special tools, andwithout the requirement of skilled labor. By my invention I haveprovided a means for eliminating the expensive and general practice ofturning the ends of the axle, in order to provide a bearing for the carwheels.

Although I have described the preferred embodiment of my invention, Imay desire to make such changes in the construction, combination andarrangement of parts thereof as do not depart from the spirit of theinvention and the scope of the appended claims.

I claim l. The combination with a squared axle, of a sleeve having aclosed end and having a cylindrical surface, said sleeve being securedupon said axle, a bushing in the form of a cylinder surrounding thesleeve, a hub disposed upon the bushing and provided with an integralhub cap, said hub cap havin a recess in which the bushing is adapted toextend, a cap secured upon the inner end of the hub and provided with aflange bearing against the bushing, said hub provided with an annularoil chamber, and further provided with plugged openings whereby to allowaccess to the chamber from the outside of the wheel, said bushing beingprovided with oil ducts extending from the chamber to the sleeve, a dogassociated with the hub against rotation thereupon, and normally out ofengagement with the sleeve, said dog adapted to be moved into a recessin the closed sleeve end whereby to lock the hub with the sleeve, andconsequently with the axle, substantially as described.

2. A device of the class described including an axle having a sleeveclosed at one end disposed thereupon, a wheel having a hub surroundingthe sleeve and provided with an integral hub cap, said sleeve at itsclosed end provided with a recess, the walls of said recess convergingfrom their ends toward a point centrally of the recess, the points ofconvergence of the recess walls being spaced apart, a substantiallyrectangular dog disposed normally within the recess in the hub cap, saiddog being of greater length than the depth of the recess in the sleeveend, a stem pivoted on the dog, said stem extending without the cap andprovided with a cross pin, a pair of arcuate lugs disposedconcentrically with the stem upon the hub cap and being spaced apart attheir ends, said cross pin adapted to be engaged upon said lugs formaintaining the dog within its recess, a spring for forcing the dogoutwardly into engagement with the recess in the sleeve end, said stemadapted to be turned for bringing the cross pin in alinement with theopenings between the lug ends, whereby the dog may be moved intoengagement with the sleeve end, substantially as described.

3. The combination of an axle provided with a. fixed sleeve having asubstantially rectangular recess in its end, a hub journaled upon theaxle and provided with a hub cap adapted for rotation with the hub, adog of substantially rectangular cross section disposed within a recesswithin the hub cap in alinement with the recess in the axle end, saiddog being of a greater length than the depth of said last recess, meansfor maintaining the dog within its recess, and means whereby the dog maybe released at will for engagement with the recess in the sleieveendwhereby to lock said hub and ax e.

4. The combination With an axle having a squared end, of a sleevedisposed upon the axle and having a cylindrical bearing surface, acylindrical bushing disposed upon said sleeve, a hub journaled on thebushing and having a hub cap adapted for rotation With the hub, saidbushing at one end engaging against said hub cap, a cap removablycarried by the hub and provided with a flange adapted to engage theopposite end of the bushing, an oil chamber provided in the hub, meansfor affording access to the chamber from Without the hub, and meanscommunicating With the chamber for allowing passage of oil therefrombetween the bushing and sleeve.

5. A device of the class described including an axle provided With afixed sleeve having a recess in its end, a hub j ournaled upon flopiemof thia patent may be obtained for five cents each, by addressing theCommissioner of Patents.

the axle, adog' disposed normally Within a recess in the hub and adaptedto be engaged at Willwithin the recess in the sleeve end for locking thehub and aXle,a stem for op eratingthe dog, said stem'projecting with--out the hub, and a guard providedon the hub and surrounding the stem forprotect JOHN (JOAN.

Witnesses:

ALoNzo MILLER, J. W. TRU'ESDALL.

Washington, D. C.

